Shaft help


I currently use a Jacoby with a Z2 shaft. I have been using Z2s for around 10 years. I tried the hybrid shaft ( turned down to, I think 12.5 ) which came with the Jacoby and a Z3 and always went back to the Z2. My Z2 is well used and I am thinking of getting.a new shaft. Unfortunately, I can’t buy another Z2. Any suggestions as to what shaft I might like.